
We employ the QCD sum rules method for description of nucleons in nuclear matter. We show that this approach provides a consistent formalism for solving various problems of nuclear physics. Such nucleon characteristics as the Dirac effective mass $m^*$ and the vector selfenergy $\Sigma_V$ are expressed in terms of the inmedium values of QCD condensates. The values of these parameters at saturation density and the dependence on the baryon density and on the neutrontoproton density ratio is in agreement with the results, obtained by conventional nuclear physics method. The contributions to $m^*$ and $\Sigma_V$ are related to observables and do not require phenomenological parameters. The scalar interaction is shown to be determined by the pionnucleon $\sigma$term. The nonlinear behavior of the scalar condensate may appear to provide a possible mechanism of the saturation.
